description: This extension applies to the [Coding](http://hl7.org/fhir/R4/datatypes.html#Coding) data type and is used to indicate the type of information covered by the code e.g. branded product with no strength or form. This is useful when there are multiple codings from the same coding system at different levels/classifications. package_name: hl7.fhir.au.base derivation: constraint name: MedicationType type: Extension elements: url: pattern: {type: Uri, value: 'http://hl7.org.au/fhir/StructureDefinition/medication-type'} index: 0 value: choices: [valueCoding] index: 2 valueCoding: {type: Coding, choiceOf: value, index: 3} package_version: 6.1.0-draft1 class: extension kind: complex-type url: http://hl7.org.au/fhir/StructureDefinition/medication-type base: http://hl7.org/fhir/StructureDefinition/Extension version: 6.1.0-draft1 required: [valueCoding, value]